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NITE STATES Parana @rrrca EDYV ARD F. DYER, OF ALVARADO, CALIFORNIA.

MANUFACTURE or BEET=- SUGAR.

SPECIFICATION forming part of Letters Patent No. 319,077, dated June 2, 1885.

Application filed February 18, 1855. (No specimens.) v

To all 2071 0172, it may concern:

Be it known that I, EDWARD F. DYER, of Alvarado,Alameda county,State of California, have invented an Improvement in the Mannfacture of Beet Sugar; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to certain improve ments in manufacturing beet-root sugar and in the treatment of the molasses, whereby I obtain an increased yield of sugar and greatly shorten the time of manufacture, saving the expense of boiling into tanks for crystallization, the cost of expensive crystallizing-tanks, and the expense of handling the low products as well as the chemical and mechanical loss before it is converted into sugar.

In the ordinary processes the juice, after being expressed in the usual manner, is defecated with lime carbonated and then evaporated to a certain specific gravity, passed through bone charcoal, and then boiled in the strike vacuum-pan to granulation. The sugar is then separated from the molasses in centrifugals, which gives what is termed the first product, which may be about six'tenths of of the whole sugar product. The molasses from this first product is then subjectedto osmosis or other well-known processes, which remove a certain proportion of salts, after which the molasses is again evaporated and placed in tanks, where it will crystallize. This crystallization takes considerable time, and after itis done the sugar is passed through centrifngals for the second product, the process being again repeated and the molasses placed in the crystallizing-tanks until it will no longer pay to do this. Each time after this process is carried out it takes a much longer time to crystalliZe-say forty eight hours for the first crystallization, five or six weeks for the second, and a year or more for the third, and so on.

The object of my improvement is to separate from the molasses the greater portion of the matter therein contained, which prevents the crystallization of sugar, and which cannot be removed by the usual methods of manufacture. Ithus increase its purity coefficient, so that it may be boiled to granulation in the strike vacuum-pan, and the entire sugar from the beet may be obtained in one product.

In carrying out my improvement the process is substantially as follows: The molasses is subjected to any of the strontia, osmosis, elation, or substitution processes for the elimination of salts or other impurities. Instead of then being boiledin. the vacuum-pan to a condition necessary for granulation in tanks in accordance with the usual methods, it is mixed with a certain proportion of raw juice defecated and clarified by any of the chemical methods, preferably with lime or some of its combinations, substantially as herein described.

The proper proportion of molasses is mixed intimately with the raw juice, either hot or cold. The defecation or carbonation is carried on in the usual manner with the excess of lime or its compounds, which removes the coloring matter and any impurities that will chemically combine, while the large percentage of gum, albumenoids, and other colloids that could not be otherwise eliminated are mechanically removed bythe copious precipitate from the raw juice. The thus clarified molasses and juice pass through the process of double carbonation, filtration, 820., which are usual to the methods of manufacture.

I am aware that the principle of clarifying molasses with lime is not new; but the mechanical effect of the dense precipitate from the raw juice on the impurities that cannot be chemically combined, and the increased purity coeflicient of the molasses by mixing it with a juice of a higher purity COGfilClBllh, so that it can be boiled to granulation in the strike vacuum-pan, I claim as my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

Theprocess of defecating and increasing the purity coeiiicient of beet-root molasses so that it may be boiled to granulation in the strike vacuum-pan by mixing it with rawjuice and dei'ecatingit, substantially as herein described.

In witness whereof I have hereunto set my hand.

ED \VAHD F. DYER.

Witnesses:

SAML. POORMAN, W. F. INGALLS. 

